Presentation of Results
After the protocol has been submitted to MEDEP-BAQ and approved, the air quality dispersion modeling analysis is to be conducted to demonstrate compliance with all applicable MAAQS/NAAQS and Class I/Class II increment standards. When applicable, it must be also demonstrated that there has been no adverse impact to all Class I AQRVs.
Once compliance with all of the applicable standards has been demonstrated, the applicant must then prepare and submit a highly detailed summary report documenting the source being modeled, the modeling efforts, the compliance demonstration (requirements are set forth in Chapters 115 and 140) as well as ALL input, output and diagnostic modeling files.
The final modeling results should be compiled in such a way as to help the project meteorologist in their review. Some of the information included in the final submittal will likely be similar to information previously submitted in the modeling protocol. Any assumptions or data introduced in the protocol (or previous analyses) that is necessary to demonstrate compliance should be restated in the final modeling submittal. Simply referencing the assumptions or data to previous submittals will not be sufficient. Understand that having all necessary information in one document will make for an easier and more timely review! The submittal should minimally contain overview/summaries of:
scope of the project
model(s) (and version) used to demonstrate compliance
meteorological data used
building related considerations (GEP analysis)
receptor grid/surrounding terrain and land use analysis
preparation of input parameters, including sample calculations
selection of modeled load cases
background data used/processed
any/all other analyses/data needed to demonstrate compliance
tables of all necessary stack inputs (physical stack parameters, emission rates, flows, etc.) in a logical manner for ALL modeled stacks (proposed, current actual and baseline stacks) in both English and metric units. Stack inputs should be carried out to a minimum of 2 decimal places. For UTM coordinates, please include the datum (NAD27 or NAD83) that the coordinates were derived from, rounded to the nearest meter. See example below:
Base Elevation (m)
Stack #1 - Wood Boiler 463,376 4,914,481 133.19 30.48 1.82 442.07 9.93 29.98
tables that list the pollutant name, averaging period(s), maximum impact, the receptor location (Easting/Northing coordinates), receptor elevation, meteorological period (YYMMDDHH or YYYY) , group and rank for all model runs. Maximum impacts should be carried out to a minimum of 2 decimal places. This methodology should be carried out for each pollutant and all year of meteorological data. See example below:
Meteorological Date Group Rank SO2 1-Hour 166.24 463,400 4914,500 136.25 - ALL H4H 3-Hour 129.32 463,450 4914,250 138.32
ALL H2H 24-Hour 78.55 463,350 4914,250 140.44 02121924 ALL H2H Annual 11.23 464,000 4914,450 139.38 2002 ALL H1H
comparison of modeling results to applicable Class II MAAQS and increment standards
comparison of modeling results to applicable Class I AQRV analyses
all input, output and diagnostic (meteorological data processing, DEM data, utility programs, etc.) files used to demonstrate compliance. Please include a directory of file(s) contained on the CDs/flash drives. Using a logical naming scheme for your modeling files will make for an easier and more timely review!
The project meteorologist can easily provide you with examples of the best way to summarize your results to aid in their review.